Function incr_existing_key

nodedb/src/engine/kv/engine_atomic.rs:489–494

()

    #[test]
    fn incr_existing_key() {
        let mut engine = make_engine();
        engine.incr(1, "counters", b"hits", 10, 0, 1000).unwrap();
        let result = engine.incr(1, "counters", b"hits", 5, 0, 1000);
        assert_eq!(result.unwrap(), 15);
    }

    #[test]
    fn incr_negative_delta() {